Facebook’s WAP server rendered the same CSS classes for millions of devices. By using the !important tag, the injected CSS overrode the default WAP stylesheets entirely.
/* Remove left navigation */ #left_col, .nav_menu, .left_nav { display: none !important; } wapmaster facebook css code
But instead of giving up, he studied why it was broken. He learned: Facebook’s WAP server rendered the same CSS classes
They didn't just browse Facebook. They painted it. .left_nav { display: none !important